We look at the division of 64809235 by 899 
The aim is to understand the frequency of 899 in 64809235.

Step 1:
6 divided by 899 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 899

Step 2:
If we divide 64 by 899, we get 0 and a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Include the next digit (8) from the dividend after 64, then repeat: 648 / 899

Let's proceed to step 3:
899 can be fit into 648 0 times, resulting in a remainder of 648.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 648, we end up with 648.
Append the next digit (0) from the dividend to 648 and continue with: 6480 / 899

Moving on to step 4:
If we divide 6480 by 899, we get 7 and a remainder of 187.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Deduct 6293 from 6480 and we're left with 187.
Grab the next digit (9) from the dividend, add it to 187, then carry on: 1879 / 899

Let's proceed to step 5:
899 can be fit into 1879 2 times, resulting in a remainder of 81.
Use 2 as the next digit of our solution. 
Result so far: 72.0
Subtracting 1798 from 1879 leaves us with 81.
Append the next digit (2) from the dividend to 81 and continue with: 812 / 899

On to step 6:
899 goes into 812 0 times with a remainder of 812.
The number 0 becomes the next digit in our result. 
Result so far: 720.0
If we subtract 0 from 812, we get 812.
Take the next digit (3) from the dividend and append it to 812, then repeat: 8123 / 899

Moving on to step 7:
The number 899 fits into 8123 9 times, leaving a remainder of 32.
Record the quotient 9 as the next digit in the result. 
Result so far: 7209.0
Subtracting 8091 from 8123 leaves us with 32.
Fetch the next digit (5) from the dividend, attach it to 32 and continue: 325 / 899

Moving on to step 8:
899 can be fit into 325 0 times, resulting in a remainder of 325.
The number 0 becomes the next digit in our result. 
Result so far: 72090.0
Deduct 0 from 325 and we're left with 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

Going ahead to step 9:
899 goes into 3250 3 times with a remainder of 553.
Write down 3 as next digit of the result. 
Result so far: 72090.3
If we take 2697 away from 3250, we end up with 553.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5530, and continue the process.

On to step 10:
The number 899 fits into 5530 6 times, leaving a remainder of 136.
The next digit of our result is 6. 
Result so far: 72090.36
Subtract 5394 from 5530 to get 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Let's proceed to step 11:
1360 divided by 899 is 1 with a remainder of 461.
Put 1 as the next digit of the answer. 
Result so far: 72090.361
Subtract 899 from 1360 to get 461.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4610, and continue the process.

Step 12:
If we divide 4610 by 899, we get 5 and a remainder of 115.
Put 5 as the next digit of the answer. 
Result so far: 72090.3615
Subtract 4495 from 4610 to get 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Advancing to step 13:
1150 divided by 899 is 1 with a remainder of 251.
The number 1 becomes the next digit in our result. 
Result so far: 72090.36151
Deduct 899 from 1150 and we're left with 251.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2510, and continue the process.

Let's proceed to step 14:
899 can be fit into 2510 2 times, resulting in a remainder of 712.
Record the quotient 2 as the next digit in the result. 
Result so far: 72090.361512
Subtract 1798 from 2510 to get 712.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7120, and continue the process.

Going ahead to step 15:
If we divide 7120 by 899, we get 7 and a remainder of 827.
Use 7 as the next digit of our solution. 
Result so far: 72090.3615127
Deduct 6293 from 7120 and we're left with 827.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8270, and continue the process.

On to step 16:
899 can be fit into 8270 9 times, resulting in a remainder of 179.
Record the quotient 9 as the next digit in the result. 
Result so far: 72090.36151279
If we take 8091 away from 8270, we end up with 179.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

After the division, we end up with 72090.36151279 and a remainder of 1.79e-07.